Other children of smaller caliber also arrived in surprising numbers. Make no mistake about that nine-inch howitzer, which appears to be only a monstrous tube of steel firing a monstrous shell, not being a delicately adjusted piece of mechanism. The gunner, his clothes oil-soaked, who has her breech apart pays no attention to the field of guns around him or the burst of a shell a hundred yards away, no more than the man with a motor breakdown pays to passing traffic. Is he a soldier? Yes, by his uniform, but primarily a mechanic, this man from Birmingham, who is polishing that heavy piece of steel which, when it locks in the breech, holds the shell fast in place and allows all the force of the explosion to pass through the muzzle, while the recoil cylinder takes up the shock as nicely as on a battleship, with no tremble of the base set in the debris of a village. He shakes his head, this preoccupied mechanician. It may be necessary to call in the gun doctor. His "how" has been in service a long time, but is not yet showing the signs of general debility of the eight-inch battery near by. They have fired three times their allowance and are still good for sundry purposes in the gunner-general's play of red and black pins on his map. The life of guns has surpassed all expectations; but the smaller calibers forward and the _soixante-quinze_ must not suffer from general debility when they lay on a curtain of fire to cover a charge. War is still a matter of projectiles, of missiles thrown by powder, whether cannon or rifle, as it was in Napoleon's time, the change being in range, precision and destructive power. The only new departure is the aeroplane, for the gas attack is another form of the Chinese stink-pot and our old mystery friend Greek fire may claim antecedence to the _Flammenwerfer_. The tank with its machine guns applied the principle of projectiles from guns behind armor. Steel helmets would hardly be considered an innovation by mediaeval knights. Bombs and hand grenades and mortars are also old forms of warfare, and close-quarter fighting with the bayonet, as was evident to all practical observers before the war, will endure as long as the only way to occupy a position is by the presence of men on the spot and as long as the defenders fight to hold it in an arena free of interference by guns which must hold their fire in fear of injury to your own soldiers as well as to the enemy.